Question

Descompuneti in factori: E(x)= x³-8x²-x+8

Answer 1

$\displaystyle E(x)=x^3-8x^2-x+8 \\ \\ E(x)=x^2(x-8)-(x-8) \\ \\ E(x)=(x-8)(x^2-1) \\ \\ E(x)=(x-8)(x+1)(x-1)$